Device for sharpening cutting instruments.



A. FORNANDER. I DEVICE FOR SHARPENING CUTTING INSTRUMENTS.

APPLICATION FILED JULY 2, 1912.

Patented Sept. 15, 1914.

2 SHEETSSHEET 1.

wuemfoz: Ernanaer wit names HVUION- n. c.

A w 0 r a m w H m S R R o N r A. FORNANDER. DEVICE FORSHARPENING CUTTING INSTRUMENTS. APPLICATION FILED JULY 2, 1912.

1 1 1 0,61 9, Patented Sept. 15, 1914.

2 SHEETS-SHEET 2.

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. wibwao we THE NORRIS PETERS ca. PHOTO-LITHQ, WASHING TON. I)v C,

JAVIUNITED srATnsrATENT omucn-j ALFRED FORNANDER, OF NEW YORK, N. Y.

DEVICE FOR SHARPENING CUTTING INSTRUMENTS.

To (ZZZ 10710211 it may concern Be it known thatI, ALFRED FORNANDER, a subject of the King of Sweden, residing in the borough of Manhattan, in the city, county, and State ofNew York, have invented new and. useful Improvements inDevices for Sharpening Cutting Instruments,

provide a device of this character which is inthe nature of a combined honing and stropping device, and which by a simple manipulation may be adapted at will to use as either a honing or stropping device.

In carrying out the above object, I provide a pair of rotatable abrasive carrylng members, which may be in the form of disks preferably of leather, said disks being facebutted and having axial movement. The blade to be sharpened is carried by a support projecting between the disks which also serves to separate thelatter. To cause the disks'to yieldingly engage with the sides of the cutting edge of the blade, I provide a pair of resilient fingers to engagewith the outer, surfaces of the disks, said fingers being carried by a. rocker'connected to and actuated by the disk rotating means'whereby said fingers alternately engage with the disks and cause one of the disks to engage with one side of the cutting edge of the blade alternately with the engagement of the other disk with the opposite side of the cutting edge of the blade.

Another object of the invention relates to the-providing of the disks with a plurality of different abrasive surfaces whereby to utilize the device for honijng or stropping purposes, and to-means to adjust the actuating means to cause different portions. of said disks to engage withthe blade.

In the drawings accompanying and form ing a part of this specification Figure 1 is a side elevation illustrating an embodiment of my invention. Fig. 2 is an end elevation, illustrating in section a blade in operative engagement between the disks and showing the manner of sharpening the same. Fig. ,3 is a perspective view of the. supporting Specification of Letters Patent.

Patented Sept. 15, 1914.

Application filed July 2, 1912. Serial No. 707,190.

standard for the disks. Fig; 412; a perspective View of the rocker with the resilient disk engagingrfingers. Fig. 5 is a face view of one of the disks. Fig. 6 is a perspective view of a bushing upon which the disks are mounted. Fig. 7 is a perspective view of the disk actuating means. Fig. "1'. is a perspective view of a supporting stud upon which the bushing and the. disk actuating means are rotatably mounted. Fig. 8

is a perspective view of the means to connect the resilient finger rocker to the actuating means. Fig. 9 is a perspective view of one form of gage to regulate the distance to which the blade may be inserted between the disks, and which. also serves to withdraw the blade from the disks. Fig. 9 is a perspective view ofa modification of the gage shown in Fig. 9. Fig. 101s a sectional detail view of the means to adjustably' connect the disk actuating means to the resilient L l? finger rocker actuating means; and Fig. 11 is a perspective View of one of the clamping members to maintain the blade in its support.

Similar characters of reference designate 5' like parts throughout the different views of the drawings. In the drawings I have shown an'embodiment of my invention comprising a base 12 having an upright standard 13. A pair of pliable and rotatable abrasive carrying members 14, 14, which maybe in'the form of face-butted disks preferably of leather adapted to have axial movement relativeto each other, are mountedv on'a bushing 15 (Fig. 6) passing through central apertures in the disks and rotatably mounted on a headed stud 16 screw threaded intothe standard 13; said bushing providedwith an annular flange 17 to lie adjacent tothe 3 outer side or surface of the disk 14. Also rotatably mounted on the bushing 15 is an. annular member or disk 18 having a plurality of 'circumferentially disposed pins 19 projecting laterally therefrom and adapted to pass through perforations in the disks 14, 14 withtheir freeends abutting against the face of thebushing fiange 17. The annular member 18, which isin the nature of an actuator forthe disks, is provided with the same.

22 and adjusting the disk 18 so thatthe pin engages inthe other hole 22;

It is essential that the abrading l disks 14, 14 are only rotatable in one direction: as indicated by the arrow in 'Fig," 2.:

Should any reverse rotary motionj be imparted thereto and a blade engage therebetween, as the disks are forced against said blade by the resilient fingers 31, 31 the disk would be cut by the blade destroying mount the crank in a'bushing 88 projecting laterally from the disk 18 j and eccentric to the center thereof with the o-fi'setportion of the crank of a length equal vto thedistance between the center of the actuating disk and the bushing 38. As motion is imparted to the crank handle to rotate the a with and to cause a portion of one abrasive disk to engage with one side of the cutting edge of the blade alternately with the en gagement of a portion of the other abrasive;

abrading disks in the direction of the arrow the offset portion of thecrank will abut against the shoulder 39 projecting beyond:

the bushing 38. However, should any reverse motion be imparted to the crank the crank will rotate in the bushing 38 until a the crank handle is in a position? coaxial with the axis of the actuating disk, and in this position will abut against the reverse side of the shoulder 39 preventing reverse rotation of the abrasive disks by the crank.

Variations may be resorted towithin the scope of my invention, and portions'of the invention may be used without others.

Having thus described my invention, 1;

claim 1. A device of the class specified, coinprising a pair of pliableand rotatable abrasive disks; a fixed blade support projecting between said disks; and means to engage with the outer sides of the disks to cause them to altemately'engage with opposite sides of the cutting edge of the blade, substantially as and for the purpose specified. V

'2. A device of the class specified, coniprising a pair of pliable and rotatable abrasive disks; a fixed blade support projecting between said disks; and a pusher togengage sideof the cutting edge of the blade alternately with the engagement of a portion of the other disk with the j opposite side of theicutting edge ofthe blade; and means- For this purpose'I pivotally meanstobear against and cause the disks to adjust the'rotating means whereby to cause diii'erent portions oft-he disks to en- "gage with the blade, substantially as and ffor the purpose Specified,

-54. A device of the class specified, comt prising a pair of pliable and rotatable facebutted disks; a blade support projecting between and separating the disks to 1 support the blade in a. fixed position; and means to rotate the disks and cause the same to alternately engage with opposite sides of a cutting edge of the blade carried by the S ppo 1 5. A honing and stropping device for cuttingfiinstruments, comprising a'pair of pliable and rotatable face-butted disks; a blade sup-port projecting between and separating the disks; means to rotate the disks means actuated by the disk rotating to alternately engage with opposite sides of the cutting edge of the blade; saiddisks and disk ro-tatingmeans being adjustable relative to said latter meansto cause'different portions of the disks'toengagewith the blade. I

v6. A device of the character described comprising a pair of revoluble' disks provided with abrasive surfaces, means for supporting a blade between said disks, and mechanism 1 for first applying pressure to each disk to force it towardthe blade and then releasing each disk from such pressure.

- '7, A device of the character described comprising a pair of revoluble disks provided with abrasive surfacesand "made of material sui'iiciently flexible to be indented by pressure, means forsupporting j'a blade between said disks, and a finger for applying pressure to a smallportion only of each disk in order to cause said small portion thereof to extend towardtheb-lade.

? 8; A device of the class specified, comprising a pair of pliable and rotatable disks;

means to rotate the disks a blade support projecting between the disksgfa'nd a pair of oscillatory resilient fingers;'one located adj acent the outer surfaee'of eachdisk'; and

means actuated by the disk rotating means to oscillate saidfingers as the disks are rotated to cause saidfingers to alternately'engage with the outer surface, of the disks to cause one disk to engage with one side of the cutting edge of the blade alternately with the engagementot the other'disk with the opposite side of the cutting edge of the blade device of the class "specifiedycompris ing a pair of pliable and rotatable disks;

a blade support projecting between the disks; apairof clamping members engaging at opposite sides of the blad'e'to rnaintain it in its supportfand a pairiof resilient fingers adjacent the outer surfacesoif the c disks, said fingers being actuated the disks' "ar retated tcalt rnately engag with the? di ks wher y n di k ngages. wi 1 ide otthje cut ing lg the l e lter nately with the engagement-of the other; disk at the oppositeside of thecutting edge f etthe blad I .19 A' device of the a;;blade: support projecting between the L a -:p a r of-clarnp1ng 'ineinbers enga'g lug; atj oppositezsides of the blade to maintrainit its support a gage to limit the movement of the blade between the-disks and to Withdraw, said blade from between the disks; and apairof resilient fingers ad jaeentthe outersurfaces of the disks, said fingers being actuated as the disks are rotated to alternately engage with the disks,

whereby one disk'engages with one side of the cutting-edge or the blade alternately with the engagement ofthe other diskat the opposite side. efthe cutting edge of the V ladal 11. A. device of the class specified,.com

prising a pair of pliable and rotatable disks; a blade support projecting between said disks; a rocker; a pair of resilient fingers carried by said rocker adjacent-the outer surfa'cesof. the disks; said rocker being ac .tuated as the disks are rotated whereby the fingers alternately engage with the outer. surfaces of the disks to cause one disk-to engage with one sideof the cuttingedge'ofthe bl d alternat y wi h e engagement .ofthe ether disk withthe opposite side of the cutting edgeof the blade.

12 ,1 1 a device of the cl ss specified, the

surfaces of;the disks to causepne' disk to engage with oneside of the cutting edge eofthe blade alternately with ther engage; .ment of theother disk with the opposite of the cutting edgeof the blade, comprising an eccentric, a strap surrounding. said eccentr c, and al nk to connect the eccentric strap wlththe rocker. y W

13, In a 4 device of .the specified, the

. cornbination of a pair of pliable .face-butted disks ;,rneans to rotatably support said disks,

comprising a rotatably mounted-bushing. passing through a central opening in; the.

disks and having an annular flange to en- -sai l. memb r:. ,a ing "l ally l pr j ct ng pinszad pt l m paes. t ough ap rt es in th disks-fwith'the tre en stherecf bearin class specified, com,- prisi g a pair of plia le and rotatabledisk .gagetheouter, side of one of the disks, anj annular member rotatably mounted on the .hu shing at the f outer side of the other Idisk,

new

her; a blade support projecting between the dis s; and a fp ir o resi ient fing adi Qfinif, the; outer surfaces of the disks to alternately engage with the disks to altersite sides of the cutting edge; of the blade. j 14:. acdev-iee of the class specified, the

having laterally projectingpins adapted to pass through apertures in the disks with the of} the. disks to alternately engage with the with 1 opposite -sides heb1ade. 1, i

In a device-of the class specified, the combination of base having. an upright standard; a stud fixed in saidstandardra pair Off pliable disks ;-.rneans to rotatably support said disks, .comprising aihushing of the cutting edge of ing. laterally projecting pins adapted to pass .ends bearing against the face of theflange on the,-.bu shing, and .a crank connected to said annular member; a. blade support projecting between the disks; and a pair of .resilient fingers adjacent the outer surfaces of thedisk's to alternately engage with the disks to alternately cause the 'disksto. engage, with opposite sides of thecutting edge ,qft 'bl de i I i combination of .a;p.airfof pliable disks; inc ans to rotatably support. said (disks, comprising a rotatably; inountedbushing. passing through a central opening in the disks and having annular flange to engage the outerside ofoneloftlie disks, an annular ne nber r'otatahly mounted on the bushing at the outer side of the other disk, said inember haring laterally projecting pins adapted' to pass through apertures in the with free ends .bearingeagainstthe iac 0 f he fla g n. he. bushing, and Ya natel-yacausethe disks to engage with oppofree ends bearing against the face ofjtheflange on the bushing, and crank connected to said annnltinlmemher; a blade support projectingbetweenthedisks;andapairof Y resilient fingers adjacenttheouter surfaces disksto alternately cause the disks to engage rotatably mounted on the studand having an annular flange to engage. the outer side I of one of the disks, an annular member. rotat'ably mounted on the stud at the outer side of the other disk, said'rnemberhavran c nn c e l o sai annula m mbers-i blacle supp O p oj cting, be e n the d s s; e j a a pairf resilientfinger-s a jacen thel uter v theottheflangeea thehushing, l surta s. of d ketc. ltern tely enga e atr nk cbnnect l o said annular m mt m i t n a, pa r of p ia le disks; means to rotatably support said disks, com v prising a rotatably mounted bushing pass; i s hr ush ent a r gi thadidzs and having an annular flange to engage the outenside-of the disks, an annularinernber rotatably lnounted on the bushing at the "outer side of the other disk, said member through apertures in the'diskswith the'free with the disks to alternately cause the disks to engage with opposite sides of the cutting edge of the blade; and means to adjust the disk rotating means whereby to cause diflerent portions of the disks to engage with the blade. j

17. In a device of the class specified, the combination of a pair of pliable disks; means to rotatably support said disks, comprising a rotatably mounted bushing passing through a central opening in the disks and having an annular flange to engage the outer side of one of the disks, an annular member rotatably mounted on the bushing at the outer side of the other disk, said memher having laterally projecting pins adapted to pass through apertures in the disks with the free ends bearing against the face of the flange on the bushing, and a crank connected to said annular member; a blade support projecting between the disks; a pair of resilient fingers adjacent the outer surfaces of the disks to alternately engage with the disks to alternately cause the disks to engage with oppositesides of the cutting edge of the blade; and means to adjust the disk rotating means whereby to cause different portions of the disks to engage with the blade, comprising a spring detent carried by the annular member and adapted to engage with either one of a bushing flange.

18. A device of the classspecified, comrising a fixed blade support; a pairof face- Eutted rotatable abrasive disks at opposite sides of said support to be normally out of contact with a blade carried by the support;

and means to push against and cause saiddisks to alternately engage with. opposite sides of the cutting edge of the blade.

19. A honing and stropping device for cutting instruments, comprising a pair of rotatable abrasive, members each member having two diflerent abrasive surfaces; means to support a cutting instrument-be tween said members in a fixed position; means to engage with and cause the abrasive members to engage with opposite sides of the cutting edge of the cutting instrument;

and means to rotatively adjust the abrasive members at will relative to each other to cause the different abrasive portions of said Copies of this patent may be obtained for plurality of apertures in the rotate said disks; a fixed support for a cutting instrument to engage between said abrasive disks; means actuated by the abrasive disk rotating means to cause said abrasive disksito alternately engage with opposite sides of the cutting edge of the cutting instrument, and means to adjust the abrasive disks relative to each other to cause the different abrasive surfaces of the abrasive disks to engage with the cutting instrument to adapt the same to honing or stropping.

21. In a device of the class specified, the combination of a pair of rotatable disks; a fixed bladesupport projecting between said disks; a pair of oscillatory fingers adjacent the outer faces of the disks; an eccentric rotatable with the disks; and flexible means to connect the fingers with the eccentric tated the fingers will alternately engage with the outer surfaces of the disks to cause one disk to engage with one side of the cutting edge of the blade alternately with the engagement of the other disk with the opposite side of the cutting edge of the blade.

22. A device of the character described comprising a pair of revoluble disks provided with oppositely disposed faces having abrasive surfaces, said disks being sufliciently flexible to be indented by pressure applied locally to a small portion thereof, so that other portions are left practically undisturbed by said pressure, means for holding a blade between said disks, and means for applying pressure to small areas only of said disks in proximity to the blade, in order toflex said disks and cause portions thereof to extend toward the blade, t

23. A device of the character described, comprising a revoluble disk provided with a normally flat face having an abrasive surface, said disks being sufficiently flexible to become indented under pressure applied to a small portion only of said disk, means for supporting a blade adjacent said face, and

means for applying pressure upon a small area only of said disk, at points adjacent the position of said blade as said disk revolves.

2A. In a. sharpening machine, the combifive cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

